| A | B |
|---|
| Mutation | Any change that occurs in a gene or chromosome |
| Codominance | Alleles are neither dominant nor recessive |
| Genotype | Genetic makeup |
| Phenotype | Physical appearance |
| Punnett Square | Chart that shows all the possible combinations of alleles that can result from a genetic cross |
| Probability | The liklihood that a particular event will occur |
| Hybrids | Have two different alleles |
| Purebreds | Have two of the same alleles |
| Mendel | Father of genetics |
| Alleles | Different forms of a gene |
| Genes | Factors that contriol traits |
| Heredity | Passing of traits from parents to offspring |
| Genetics | Scientific study of heredity |
| Recessive Allele | Allele that is covered up in the presence of a dominant allele |
| Dominant Allele | Allele whose trait always shows up when it is present |
| Multiple Alleles | When a single gene has more than two alleles |
| Double Helix | Shape of DNA molecule |
| Sex-linked Genes | Genes on the X and Y chromosome |
| Carrier | A person who has one recessive allele for a trait and one dominant |
| Pedigree | Chart or "family tree" that tracks whihc members of a family have a particular trait |
| Genetic Disorder | Abnormal condition that a person inherits through genes or chromosomes |
| Karyotype | Picture of all the chromosomes in a cell |
| Amniocentesis | Procedure to determine whether a baby will have some genetic disorders |
| Clone | Organism that is genetically identical to the organism from which it was produced |
